/**
 *
 * @access public
 * @return void
 **/
function chkall(input1)
{
    var objForm = document.forms[input1];
    var objLen = objForm.length;

    for (var iCount = 0; iCount < objLen; iCount++)
    {
            if (objForm.elements[iCount].type == "checkbox")
            {
                objForm.elements[iCount].checked = true;
            }
    }
}